//package com.example.demo.filter;
//import java.io.IOException;
//import javax.servlet.Filter;
//import javax.servlet.FilterChain;
//import javax.servlet.FilterConfig;
//import javax.servlet.ServletException;
//import javax.servlet.ServletRequest;
//import javax.servlet.ServletResponse;
//import javax.servlet.http.HttpServletRequest;
//import javax.servlet.http.HttpServletResponse;
//
//public class CorsFilter implements Filter {
//
//    @Override
//    public void init(FilterConfig filterConfig) throws ServletException {
//    }
//
//    @Override
//    public void doFilter(ServletRequest req, ServletResponse res, FilterChain chain) throws IOException, ServletException {
//        HttpServletResponse response = (HttpServletResponse) res;
//        HttpServletRequest request = (HttpServletRequest) req;
//        response.setHeader("Access-Control-Allow-Origin", "*");
//        response.setHeader("Access-Control-Allow-Methods", "POST, GET, PUT, OPTIONS, DELETE");
//        response.setHeader("Access-Control-Max-Age", "3600");
//        response.setHeader("Access-Control-Allow-Headers", "x-requested-with, Content-Type");
//        response.setHeader("Access-Control-Expose-Headers", "Authorization");
//        if ("OPTIONS".equals(request.getMethod())) {
//            response.setStatus(HttpServletResponse.SC_OK);
//        } else {
//            chain.doFilter(req, res);
//        }
//    }
//
//    @Override
//    public void destroy() {
//    }
//}
